From 34a4a753d15f905158d77fb81adc9c19a02a4639 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 27 Jun 2005 14:36:41 -0700 Subject: [PATCH] [PATCH] IB/mthca: Set RDMA/atomic capabilities correctly mthca apparently had the meanings of the max_rd_atomic and max_dest_rd_atomic QP attributes backwards. max_rd_atomic limits the maximum number of outstanding RDMA/atomic requests as an initiator (on a send queue), and max_dest_rd_atomic specifies the resources allocated to handle RMDA/atomic requests from the remote end of the connection. We were programming our QP context with these values swapped. Signed-off-by: Roland Dreier Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/infiniband/hw/mthca/mthca_qp.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index 793c216..6bed9a3 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -724,9 +724,9 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RETRY_COUNT); } - if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { - qp_context->params1 |= cpu_to_be32(min(attr->max_dest_rd_atomic ? - ffs(attr->max_dest_rd_atomic) - 1 : 0, + if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { + qp_context->params1 |= cpu_to_be32(min(attr->max_rd_atomic ? + ffs(attr->max_rd_atomic) - 1 : 0, 7) << 21); qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_SRA_MAX); } @@ -764,10 +764,10 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) qp->atomic_rd_en = attr->qp_access_flags; } - if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { + if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { u8 rra_max; - if (qp->resp_depth && !attr->max_rd_atomic) { + if (qp->resp_depth && !attr->max_dest_rd_atomic) { /* * Lowering our responder resources to zero. * Turn off RDMA/atomics as responder. @@ -778,7 +778,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) MTHCA_QP_OPTPAR_RAE); } - if (!qp->resp_depth && attr->max_rd_atomic) { + if (!qp->resp_depth && attr->max_dest_rd_atomic) { /* * Increasing our responder resources from * zero. Turn on RDMA/atomics as appropriate. @@ -799,7 +799,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) } for (rra_max = 0; - 1 << rra_max < attr->max_rd_atomic && + 1 << rra_max < attr->max_dest_rd_atomic && rra_max < dev->qp_table.rdb_shift; ++rra_max) ; /* nothing */ @@ -807,7 +807,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) qp_context->params2 |= cpu_to_be32(rra_max << 21); qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRA_MAX); - qp->resp_depth = attr->max_rd_atomic; + qp->resp_depth = attr->max_dest_rd_atomic; } qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RSC); -- 2.7.4